Originally Posted by shellieca
I have the same thing, usually the noise comes from the intake arm if its a kind of rattle. I usually push down on it gently & it'll stop. However I am switching it over to a sponge filter. Switched my 10g tanks yesterday & I'm liking it much better than an HOB or internal filter. You might look into a sponge filter.
I figured that out too, but the rattling only stops for a couple mins e.e lol
I thought about getting a sponge filter, but wouldn't the air pump be louder? :S
If I did get a sponge filter, how would you suggest keeping that hole in the back of the lid covered so my betta won't jump out? I have a jumper. D: